lacklustre
"lacklustre" is a 10-letter English headword indexed on PlainSpell.
The verdict
“lacklustre” is uncommon English (frequency #56,236 among 2,297 “L” headwords), classed as an adjective. The kind of spelling people second-guess.
- #56,236
- frequency rank, English
- 2,297
- “L” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Alternative spelling of lackluster.
Corpus desk
Index EN-lacklustre · lacklustre · English
lacklustre · rank #56,236 · 0 variants · 0 confusables
- FREQ-RARE #56,236
- LEN-MEGA 10 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 2,297
- PHOTO-FINISH Labelle
Nearest frequency peer: Labelle (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “lacklustre”
Sparse band: bars invert rank so rarer forms read shorter
- Kray
Kray
43,769 corpus weight
- Krupp
Krupp
43,768 corpus weight
- Labelle
Labelle
43,766 corpus weight
- lacklustre
lacklustre
43,765 corpus weight
- Lak
Lak
43,764 corpus weight
- Leake
Leake
43,761 corpus weight
What this shows Long-tail view: where “lacklustre” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | lacklustre |
| Language | English |
| Part of speech | Adjective |
| Letters | 10 |
| Frequency rank | #56,236 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “lacklustre” in English
Rare enough to double-check
lacklustre is uncommon English at frequency #56,236 among 2,297 “L” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Alternative spelling of lackluster.".
No misspelling variants are generated for lacklustre in our index, which points to an orthography that plays by predictable English rules. No confusable counterpart is on file for this word, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From lack + lustre. The correct English form is lacklustre, spelled L-A-C-K-L-U-S-T-R-E.
Definition
- 1Alternative spelling of lackluster.
Recorded use
Wiktionary examplesThese source excerpts show how lacklustre appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Substitute Charlie Austin scored seven minutes into his Southampton debut as a lacklustre Manchester United were booed off at Old Trafford.
With railway industry revenues continuing to sit significantly below their pre-pandemic level, and a lacklustre response by the industry to Government's calls for efficiencies and cost control, it's no surprise that the Treasury has lost faith in the railway's ability to curb its need for financial support.
Etymology
From lack + lustre.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "lacklustre", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 10 letters (nearest by frequency rank).